Mitsubishi Electric GT11 User Manual page 75

• Remedy 1 (Refer to the figures Remedy 1-1 and 1-2 below.)
If the electric potential difference between the ground cable and the panel that houses the GOT is creating
problems, connect the ground cable to the panel also.
If the wiring method as shown in Remedy 1-1 is not feasible, follow Remedy 1-2.
Connection cable
Ground cable from
the panel that
houses control
equipment
Use the thickest
cable possible.
Remedy 1-1
If taking Remedy 1 worsens noise interference, taking Remedy 2 may alleviate it.
• Remedy 2 (Refer to the figures Remedy 2-1 and 2-2 below.)
Attach a ferrite core to the cable if noise from the GOT panel has adverse effects on the GOT when Remedy
1 is taken.
Wind the wire around the ferrite core several times (approx. 3 times), if a ferrite core is used.
If the wiring method as shown in Remedy 2-1 is not feasible, follow Remedy 2-2.
Connection cable
Ground cable from
the panel that
houses control
equipment
Use the thickest
cable possible.
Remedy 2-1
Connection cable
Ground cable from
the panel that
houses control
FG
equipment
Use the thickest
cable possible.
Panel grounding
Connection cable
Ground cable from
the panel that
houses control
FG
equipment
Use the thickest
cable possible.
Ferrite core
Panel grounding
7.1.2 The cause of malfunctions related wiring/Remedy
FG
Panel grounding
Remedy 1-2
FG
Ferrite core
Panel grounding
Remedy 2-2
7.1 Power Supply Wiring
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